a hydraulic press in a garage is attached to a platform that is used to lift cars. the press includes a small piston that is attached to a fluid-filled pipe, which opens into a larger chamber under the platform (see image below). if the platform has a radius of 3 m and the piston has a radius of 3 cm, how much force (in n) must be applied to the piston in order to raise a 1200 kg car?